Rename vault_aws_sts_roles

iam_provisioning_buckets: use power_user vault sts role remote_state: use power_user vault sts role aws_ses: use power_user vault sts role aws_account_create: use power_user vault sts role aws_terraform_pipeline: use power_user vault sts role vault_aws_sts_cloud: use power_user vault sts role vault_aws_sts_infra: use power_user vault sts role iam_provisioning_config: use power_user vault sts role